First they came for the communists,
and I didn't speak out because I wasn't a communist.

Then they came for the trade unionists,
and I didn't speak out because I wasn't a trade unionist.

Then they came for the Jews,
and I didn't speak out because I wasn't a Jew.

Then they came for me
and there was no one left to speak out for me.

Martin Niemöller

One of my favorite poems. It summarizes what apathy and inactivity can do. That same inactivity is what gives rise to today's extremism in my opinion. We, the intellectual atheists, aren't doing enough to prevent the cancer of religion from deeply spreading in al political organs.

I'm tired of this poem. Everyone uses it as the go-to poem for their cause and changes a few words to make it apply to their situation and it's just getting tired. In its proper context it's alright but it's far from amazing.

As for your question the only thing we can do is answer questions and be cool, raging atheists only make raging theists worse and vice versa but just let people come around to the idea on their own, if they will, and that will suffice. As comedian Daniel Tosh put it, "Has anyone ever actually won a debate?"